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Sectional model test study on vortex-excited resonance of vehicle-bridge system of Shanghai Bridge over

Li ZHOU, Yaojun GE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1, Pages 67-72 doi: 10.1007/s11709-009-0007-4

Abstract: It is necessary to study how vehicles influence the vortex-excited resonance of vehicle-bridge systems, because lock-in wind speed is low and vortex-excited resonance is sensitive to any change in the main girder sections. Based on the Shanghai Bridge over the Yangtse River, the vortex-excited resonance of a 1∶60 scale sectional model was tested in a TJ-1wind tunnel, with or without vehicles at the attack angle of 0°, +3 and -3°, respectively. The conversion relationships between the resonant amplitudes of the sectional model and that of the prototype bridge were also established by mode shape correction. The result indicates that: 1) for the bridge with vehicles, the vertical vortex-excited resonance is accompanied by torsion vibration with the same frequency, and vice versa, 2) the amplitude of vortex-excited resonance of the bridge with vehicles is much larger than that of the bridge without vehicles, and 3) the lock-in wind speed of the vortex-excited resonance becomes smaller due to the disturbance of vehicles. It is obvious that vehicles bring about changes in the aerodynamic shape of the main girder. Therefore, the influence of vehicles on vortex-excited resonance performance of vehicle-bridge systems, in terms of both amplitude and mode, should not be ignored.

Keywords： vehicle-bridge system sectional mode vortex-excited resonance wind tunnel test mode shape correction

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Digitalization optical open loop test system for fiber optic gyroscope

ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4, Pages 434-438 doi: 10.1007/s11465-006-0053-8

Abstract: speedily, stably and expediently, and to realize the amity interface between human and machine, a digital systemAll the interface functions of GPIB and the hardware system are realized through FPGA.With a digital sampling and processing system designed with VC++ in Windows platform, the real-time controllingSo the design of the system is flexible, the reliability and the stability are improved, error rate isno more than 10, the highest bit rate is 8 MB/s and the open loop detection system for optic fiber gyros

Keywords： stability real-time controlling standardization controlling procedure complete digitalization

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Experimental investigation of a novel micro gas turbine with flexible switching function for distributed power system

Xiaojing LV, Weilun ZENG, Xiaoyi DING, Yiwu WENG, Shilie WENG

Frontiers in Energy 2020, Volume 14, Issue 4, Pages 790-800 doi: 10.1007/s11708-020-0691-2

Abstract: centrifugal compressor, a radial turbine, a combustor, a high-speed permanent magnet generator, and a control systemThis system also can realize flexibly switching from the start motor mode to the generator mode, andfrom grid-connected mode to off-grid mode, because the innovative multi-state switching control system

Keywords： gas turbine flexible switching system control system distributed power system emission test

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Development Path of Anthropomorphic Test Device with Chinese Physical Signs

Liu Zhixin, Wu Yongqiang, Ma Weijie

Strategic Study of CAE 2019, Volume 21, Issue 3, Pages 103-107 doi: 10.15302/J-SSCAE-2019.03.022

Abstract: Automobile safety is an important factor affecting public transport safety, and the anthropomorphic testdevelopment path for the ATD with Chinese physical signs is proposed, thus to further improve the standards system

Keywords： automobile safety anthropomorphic test device (ATD) Chinese physical signs standards system

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Launch dynamics of multibody system and its applications

Rui Xiaoting

Strategic Study of CAE 2011, Volume 13, Issue 10, Pages 76-82

Abstract:

Bad firing precision, huge consumption of projectiles in test and launchFiring precision and the launch safety of weapon system depend on dynamics style of weapon system.As a engineering subject of multidisciplinary approach studying the motion styles of weapon system andin the world, provided new theory and technology for design and test of firing precision and launchand test of firing precision and safety for rockets and gun weapons are studied.

Keywords： firing precision consumption of projectile in test launch safety launch dynamics of multibody system transfer matrix method of multibody system

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Design of an Automatic Test System for Diesel Inlet Swirl and Evaluation Methods

Wang Jichao,Liu Dexin,Feng Hongqing

Strategic Study of CAE 2007, Volume 9, Issue 5, Pages 85-90

Abstract: And it is usually measured and valued by a steady flow test system in designing and development processThis paper firstly presented the scheme of a highly automatic steady test bench, on which the valve liftand test pressure are all computer-controlled.The experiment results show that even under the same test condition, the results are different

Keywords： swirl diesel engine paddle wheel anemometer swirl torque meter steady test bench

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Mechanical performance analysis and stiffness test of a new type of suspension bridge

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5, Pages 1160-1180 doi: 10.1007/s11709-021-0760-6

Abstract: A stiffness test was carried out on the new type of suspension bridge with a small span, and the results

Keywords： new type of suspension bridge stiffness test mechanical performance railway bridge space truss

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Mixed mode properties of CNT reinforced composites using Arcan test rig

Jacob MUTHU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4, Pages 397-404 doi: 10.1007/s11709-015-0321-y

Abstract: Composite materials reinforced with carbon nanotubes were mechanical tested using Arcan test rig underArcan test rig was designed and fabricated to work with the Shimadzu testing machine.

Keywords： CNT composites Arcan test rig stress intensity factor

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Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell

Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN

Frontiers in Energy 2017, Volume 11, Issue 3, Pages 326-333 doi: 10.1007/s11708-017-0489-z

Abstract: In this paper, a novel accelerated test method was proposed to analyze the durability of MEA, considering

Keywords： polymer electrolyte membrane fuel cell accelerated life-time test load cycling test durability

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XB High Accuracy Rocket Sled Test Track

Yang Xingbang

Strategic Study of CAE 2000, Volume 2, Issue 10, Pages 98-104

Abstract:

Rocket sled test track is a large ground dynamic simulating test facility.China has successfully built the world ´s only track —XB high accuracy rocket sled test track

Keywords： rocket sled test track ground dynamic simulating test

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Application of metal magnetic memory test in failure analysis and safety evaluation of vessels

Yiliang ZHANG, Song YANG, Xuedong XU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 40-48 doi: 10.1007/s11465-009-0003-3

Abstract: Metal magnetic memory test (MMMT), which is a new subject in the field of nondestructive examination,MMMT and other test methods are applied in the study to put a propylene purifier of a temperature-jump

Keywords： Metal magnetic memory test (MMMT) nondestructive testing (NDT) residual stress propylene purifier ammonia

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Investigating the raveling test for full-depth reclamation

Robert HILL, Andrew BRAHAM

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 2, Pages 222-226 doi: 10.1007/s11709-017-0423-9

Abstract: Currently, there is no test to quantify the timing of return to traffic.In this study, the “Raveling test of cold mixed bituminous emulsion samples” (ASTM D7196) was used toRaveling test data was collected from 0 to 48 hours of curing, however, samples were often not able to

Keywords： raveling full depth reclamation

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Prediction of the shear wave velocity

Amoroso SARA

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1, Pages 83-92 doi: 10.1007/s11709-013-0234-6

Abstract: The paper examines the correlations to obtain rough estimates of the shear wave velocity from non-seismic dilatometer tests (DMT) and cone penetration tests (CPT). While the direct measurement of is obviously preferable, these correlations may turn out useful in various circumstances. The experimental results at six international research sites suggest that the DMT predictions of from the parameters (material index), (horizontal stress index), (constrained modulus) are more reliable and consistent than the CPT predictions from (cone resistance), presumably because of the availability, by DMT, of the stress history index .

Keywords： horizontal stress index shear wave velocity flat dilatometer test cone penetration test

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Present Situation and Future Prospects of Child Restraint Systems for Vehicles

Fang Yuan,Wu Guangqiang

Strategic Study of CAE 2006, Volume 8, Issue 8, Pages 81-85

Abstract:

Child restraint system(CRS)is a new study field in the world.

Keywords： child restraint system safety chair sled test injury criteria rating program

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Model test and discrete element method simulation of shield tunneling face stability in transparent clay

Huayang LEI, Yajie ZHANG, Yao HU, Yingnan LIU

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1, Pages 147-166 doi: 10.1007/s11709-020-0704-6

Abstract: clay with properties similar to those of Tianjin clay is prepared and a new transparent clay model testapparatus is developed to overcome the “black box” problem in the traditional model test.

Keywords： shield tunneling face stability transparent clay model test numerical simulation